Step well quantum cascade laser emitting at 3 THz Available to Purchase

A quantum cascade laser based on a three well active module and emitting at 3 THz is demonstrated. The optical transition is vertical in real space and localized in an $Al0.03Ga0.97As$ quantum well. Maximum operating temperature of 123 K in pulsed mode is reported, with threshold current densities as low as $110A/cm2$ at 10 K and $175A/cm2$ at 100 K. High slope efficiency values testify the good internal quantum efficiency of the structure.